python3 only packages

[Elan Ruusamäe]

what should be .spec named?


python3-foo.spec?

python-foo.spec?



```
[~/rpm/packages/google-chrome(71.0.3578.98) (master)★] ➔ pip2 install repomd
Collecting repomd
   Could not find a version that satisfies the requirement repomd (from 
versions: )
No matching distribution found for repomd

[~/rpm/packages/google-chrome(71.0.3578.98) (master)★] ➔ pip3 install repomd
Collecting repomd
   Downloading 
https://files.pythonhosted.org/packages/1f/52/4c448b477f0e9f55b613063bbc49fa326dc277ae7577c836ae8dedd8bcc4/repomd-0.1.0-py3-none-any.whl
Requirement already satisfied: lxml in 
/usr/lib64/python3.7/site-packages (from repomd) (4.2.5)
Installing collected packages: repomd
Could not install packages due to an EnvironmentError: [Errno 13] 
Permission denied: '/usr/local/lib64/python3.7'
Consider using the `--user` option or check the permissions.

[~/rpm/packages/google-chrome(71.0.3578.98) (master)★] ➔

```